[4/8] KVM: selftests: Open code vcpu_run() equivalent in guest_printf test

Commit Message

Sean Christopherson July 19, 2024, 11:43 p.m. UTC

Open code a version of vcpu_run() in the guest_printf test in anticipation
of adding UCALL_ABORT handling to _vcpu_run().  The guest_printf test
intentionally generates asserts to verify the output, and thus needs to
bypass common assert handling.

Open code a helper in the guest_printf test, as it's not expected that any
other test would want to skip _only_ the UCALL_ABORT handling.

Signed-off-by: Sean Christopherson <[e-mail]>
---
 .../testing/selftests/kvm/guest_print_test.c  | 19 +++++++++++++++++--
 1 file changed, 17 insertions(+), 2 deletions(-)

Patch

diff --git a/tools/testing/selftests/kvm/guest_print_test.c b/tools/testing/selftests/kvm/guest_print_test.c
index 8092c2d0f5d6..bcf582852db9 100644
--- a/tools/testing/selftests/kvm/guest_print_test.c
+++ b/tools/testing/selftests/kvm/guest_print_test.c
@@ -107,6 +107,21 @@  static void ucall_abort(const char *assert_msg, const char *expected_assert_msg)
 		    expected_assert_msg, &assert_msg[offset]);
 }
 
+/*
+ * Open code vcpu_run(), sans the UCALL_ABORT handling, so that intentional
+ * guest asserts guest can be verified instead of being reported as failures.
+ */
+static void do_vcpu_run(struct kvm_vcpu *vcpu)
+{
+	int r;
+
+	do {
+		r = __vcpu_run(vcpu);
+	} while (r == -1 && errno == EINTR);
+
+	TEST_ASSERT(!r, KVM_IOCTL_ERROR(KVM_RUN, r));
+}
+
 static void run_test(struct kvm_vcpu *vcpu, const char *expected_printf,
 		     const char *expected_assert)
 {
@@ -114,7 +129,7 @@  static void run_test(struct kvm_vcpu *vcpu, const char *expected_printf,
 	struct ucall uc;
 
 	while (1) {
-		vcpu_run(vcpu);
+		do_vcpu_run(vcpu);
 
 		TEST_ASSERT(run->exit_reason == UCALL_EXIT_REASON,
 			    "Unexpected exit reason: %u (%s),",
@@ -159,7 +174,7 @@  static void test_limits(void)
 
 	vm = vm_create_with_one_vcpu(&vcpu, guest_code_limits);
 	run = vcpu->run;
-	vcpu_run(vcpu);
+	do_vcpu_run(vcpu);
 
 	TEST_ASSERT(run->exit_reason == UCALL_EXIT_REASON,
 		    "Unexpected exit reason: %u (%s),",